Fuel issues after rearm/refuel

[=475FG= Dawger]

I cannot capture a short track for this one. 
 

In MP, after rearm/refuel the centerline tank and/or fuel system behaves strangely. 
 

The external tank appears to feed a bit and then stop. Much later the fuel quantity will sometimes jump from 4-5K back up to a much higher number. 
 

Yesterday, I landed with damage. Did a repair then rearmed and refueled. External CL fed for a short period and then appeared empty after about 30 seconds. 
 

And then, a while later, I suffered a double flameout with 4090 lbs on the fuel gauge. 
 

 

[Zabuzard]

Unfortunately your description is a bit too vague to be actionable. Unless you are able to dig out more details, this will be a blind investigation.

The fuel system is quite complex and it does not really show you exactly what is going on, so I would probably first of question your interpretations of what the plane showed you.
For example, how did you determine the tank was empty? The light on the warning panel does not say that the tank is empty. The fact that it transfers only for a short amount of time and then stops is also correct behavior. The number increasing from 4/5k upwards when getting refilled is also correct.

You mentioned damage. So it would for example also be possible that you damaged perhaps one of the valves between, for example tank 3 and 4, 5 and 6. In which case your external tanks would only fill up tank 3 and 5 and from there on it would stop. Or possibly you damaged the sensor that controls opening and closing the valves. Or one of the transfer pumps between perhaps tank 2 and 6.

When your engines died with fuel on the totalizer and they actually died because they ran out of fuel, that could also indicate a battle-damage failure of the auto-transfer system that would otherwise force trapped fuel into the engine feed cell 1.
It is also possible that the auto-transfer system did work and tried to perhaps get fuel from your wing tanks to cell 1 but you stayed in afterburner for a minute or two, with which the transfer system cannot keep up with if there is only one or two tanks still supplying fuel.

As you might notice, there are way too many moving parts around this system to really say if you encountered a bug or just a correct behavior of a complex system.

[=475FG= Dawger]

I understand there are many moving parts. 
 

However, you are missing a salient point. After landing with damage, I did a repair. 
 

So if the previous battle damage caused the issues described, repair is bugged. 
 

If repair isn’t bugged, then the aircraft ran out of fuel with 4000 lbs on the gauge. 
 

I will be testing this further and can post the long tracks associated with further testing if you like. 

[Zabuzard]

You might have ran out bc of long afterburner usage with occasional negative G, which the system can't necessarily keep up with.

The remaining fuel might have been trapped in the wing tanks while you perhaps had the external tanks selected.

You might have had the refueling door opened accidentally, causing the transfer to get stopped.

You might have over-G'ed some equipment, gauge or sensors after your repair.

The engines might not even have died due to running out of fuel to begin with.

And for sure, it is also possible that there is a bug. But its unfortunately impossible for me to tell where. Or to know where to start looking for it without more info what exactly happened :/

[=475FG= Dawger]

None of that happened. 

After repair/rearm/refuel, I took off, climbed to 7000 ft and did approximately six orbits at military power or less, never pulled more than 4 G, fired 4 AGM-65’s and the engines flamed out with 4K on the gauges  

My guess is repair is bugged and I had a massive fuel leak but since you obviously aren’t too interested I guess it is pointless to bother even mentioning. 
 

 

[G.J.S]

1 hour ago, =475FG= Dawger said:

None of that happened. 

After repair/rearm/refuel, I took off, climbed to 7000 ft and did approximately six orbits at military power or less, never pulled more than 4 G, fired 4 AGM-65’s and the engines flamed out with 4K on the gauges  

My guess is repair is bugged and I had a massive fuel leak but since you obviously aren’t too interested I guess it is pointless to bother even mentioning. 
 

 

You’re asking him to know the full story when you are only letting him glance at the book cover.

He needs details, as he asked, provided by a track that can be picked apart, and likely show exactly where things are not as they should be.

 

Just not interested to provide one, or is that pointless to even bother?

[Zabuzard]

8 hours ago, =475FG= Dawger said:

My guess is repair is bugged and I had a massive fuel leak but since you obviously aren’t too interested I guess it is pointless to bother even mentioning. 

I am sorry if that is your impression. It is of the utmost importance to us that our customers can fly our modules, have fun and are not experiencing any problems. I hear you and I believe what you are describing.

Unfortunately, in order to help you by either pointing out a possible user error or identifying and fixing an actual bug, I need more details.

I have checked the fuel systems repair code and tested it today, but could not find any issues.